Kelly, pull your head out. It is not that complex. Under that plastic cover
with the 3 screws, is a flat wound spring with a square bend on the end. It
meshes with a piece of linkage connected to the choke plate internally in
the carb. That is why you could not detect any linkage. When the engine is
completely cold, loosen those three screws, (no need to remove them
completely), and rotate the plastic cover until you see the choke plate
move towards the closed position. If it opens, you are turning it the wrong
way. Turn towards the closed position until it just touches closed, then
tighten the screws. It is not a complicated adjustment. You can easily do
it. Your engine will thank you.
Jim Hupy
Salem, Or
78 GMC ROYALE 403
> Thank you Johnny, it also initially seemed to me like something was
> supposed to be connected but wasn't. Interesting comment on the right
> carb. I'll
> try to look that up. the three screws on the round black thing are on the
> passenger side where the bimetal spring is (that's the spring people are
> talking about not the visible spring?)
>
> Just making sure i have the right parts in mind
>
> kelly
>
>
>
> > After watching, I wonder if the spring is properly connected. (I also
> wonder if that's the correct carb - have you checked the number
> > stamped/cast on the driver's side of the carb against the manual?)
> > Remove the three screws on the round black thing and pull it out - it is
> the temp spring which moved the choke plate. You should see in its
> > housing a metal tab which is connected directly to the choke plate:
> Moving the tab should move the plate without any slack or hesitation. There
> > should be a slot in the tab which ebngages the end of the spring to move
> the choke. If this is broken or not properly engaged, the choke will not
> > work properly. When it is properly engaged, rotating the spring holder
> should also move the choke in either direction. When it does, turn it until
> > thye choke just closes and then replace and tighten the three screws.
> You choke stove looks properl;y installed and should work. Your unloader
> > diaphragm also looks properly hooked.
> >
> > --johnny
>
>
> --
> 1978 Kingsley
> Putney VT
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
with the 3 screws, is a flat wound spring with a square bend on the end. It
meshes with a piece of linkage connected to the choke plate internally in
the carb. That is why you could not detect any linkage. When the engine is
completely cold, loosen those three screws, (no need to remove them
completely), and rotate the plastic cover until you see the choke plate
move towards the closed position. If it opens, you are turning it the wrong
way. Turn towards the closed position until it just touches closed, then
tighten the screws. It is not a complicated adjustment. You can easily do
it. Your engine will thank you.
Jim Hupy
Salem, Or
78 GMC ROYALE 403
> Thank you Johnny, it also initially seemed to me like something was
> supposed to be connected but wasn't. Interesting comment on the right
> carb. I'll
> try to look that up. the three screws on the round black thing are on the
> passenger side where the bimetal spring is (that's the spring people are
> talking about not the visible spring?)
>
> Just making sure i have the right parts in mind
>
> kelly
>
>
>
> > After watching, I wonder if the spring is properly connected. (I also
> wonder if that's the correct carb - have you checked the number
> > stamped/cast on the driver's side of the carb against the manual?)
> > Remove the three screws on the round black thing and pull it out - it is
> the temp spring which moved the choke plate. You should see in its
> > housing a metal tab which is connected directly to the choke plate:
> Moving the tab should move the plate without any slack or hesitation. There
> > should be a slot in the tab which ebngages the end of the spring to move
> the choke. If this is broken or not properly engaged, the choke will not
> > work properly. When it is properly engaged, rotating the spring holder
> should also move the choke in either direction. When it does, turn it until
> > thye choke just closes and then replace and tighten the three screws.
> You choke stove looks properl;y installed and should work. Your unloader
> > diaphragm also looks properly hooked.
> >
> > --johnny
>
>
> --
> 1978 Kingsley
> Putney VT
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
